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Old Aug 27, 2010 | 01:32 AM
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Same as 4.9?
Does anyone know if the flywheel and clutch that came with the 4.9 with a ZF are the same as those on a 351W with the same oem trans?
 
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Old Aug 27, 2010 | 07:11 AM
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The flywheel has a different balance, but the clutch and pressure plate are interchangeable.
 
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Old Aug 27, 2010 | 10:47 AM
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Originally Posted by BaronVonAutomatc
The flywheel has a different balance, but the clutch and pressure plate are interchangeable.

Another question: Since I have a flywheel from a '75, is that the same as the one I would get from the ZF years on a 4.9?
 
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Old Aug 27, 2010 | 06:53 PM
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Should be the same, I don't think there were variations in bell housing/flywheels for the I6 after ~1972 - at least not teeth or diameter wise. Worst case take it to NAPA and compare it to a newer one.
 
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Old Aug 27, 2010 | 07:35 PM
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Originally Posted by BaronVonAutomatc
Should be the same, I don't think there were variations in bell housing/flywheels for the I6 after ~1972 - at least not teeth or diameter wise. Worst case take it to NAPA and compare it to a newer one.
Of course! Why didn't I think of that?
 
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Old Aug 27, 2010 | 10:18 PM
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You are still obsessing about a cold drink of water...
 
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Old Aug 27, 2010 | 10:56 PM
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M5 flywheels work with the ZF too, they are a lot easier to find.
-John
 
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Old Aug 28, 2010 | 12:05 AM
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Originally Posted by johnboy427
M5 flywheels work with the ZF too, they are a lot easier to find.
-John
What is an M5 flywheel?
 
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Old Aug 28, 2010 | 01:16 AM
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The M5OD used in the half tons. It was the light duty 5spd, and there are a lot more half tons with 300s than 3/4 and 1 tons.
-John
 
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Old Aug 31, 2010 | 11:06 PM
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Originally Posted by johnboy427
The M5OD used in the half tons. It was the light duty 5spd, and there are a lot more half tons with 300s than 3/4 and 1 tons.
-John
Yep, so far all the flywheels, clutches and pressure plate on the later ones are the same. The only differences in any of them that I've seen are the throwout bearings (std fork on older, hydraulic on later).
 
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